One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6,10,11)(7,12,8,9)(13,14,18,17)(15,20,16,19)(21,22,27,26)(23,24,25,28)(5,7,10,8)(6,9,11,12)(21,23,27,25)(22,28,26,24)(13,15,18,16)(14,19,17,20)(21,24)(22,25)(23,26)(27,28)(1,2)(3,4)(5,8,10,7)(6,9,11,12)(13,16,18,15)(14,20,17,19)(21,25,27,23)(22,28,26,24)(5,9)(6,7)(8,11)(10,12)(13,17,18,14)(15,20,16,19)(21,26,27,22)(23,28,25,24)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.